Fastener



F. S. CARR Jan. 14, 1930.

FASTENER Filed Dec. so. 1926 ne@ s. 00,92

Patented Jan. 14, 1930 UNITE-D STATES FEED s. CARR, E NEW-ron, MASSACHUSETTS, ASSIGNon, -BY MESNE aSSreNMEN'rS vmo UNITED-@Aan EASTENEEeenronA-Tioii, 0E eAMBnineE, nassaeriusm'rs, A

CORPORATION OF MASSACHUSETTS -EnsTENEE Application led December 53,0, 1926. Serial No. 157,966.

My inventionaims y.to provide improvements 1in flush ltype fasteners.

In they drawings, ,which illustratea preferred embodiment yof my inventionz- Figurel is .an .elevation of ya three-side lock Hush type fastener, as used forsecuring-a curtain to ayehicle;

Fig. 2 is asection on the line 2 2 of Fig. l, being partly inelevation; Y

Fig. 3 is arearV elevation of ,a curtain with the stud attached;

Fig. 4 is aseetion on lthe linelflof Fig. 2, showing the relation of .the head `andlnee of the stud with the socket;

Fig. 5 is a ,section on the line 5?..5ofFig.

to its support;

Fig. 6 includes .a front, a seetional and a rear View ofthesocket; land Fig. 7 is a yside..elevationofthe socket as it appears before attachmentto Aa support.

The fastener illustrated in the drawings is a threefside lock, yflush Atype fastenenthe stud being locked with thefsoclret ,against Y separation by lateral stress transversebto the separation by an outward-pull, except'Qw-hen a pull vis exerted at a `predeterrnined Side thereof. The socket isfeountersunk `into its Sosupport so that it is substantially Lflush with.

the outer face ofthe support, as shown in Fig. 2. lThe socket is not necessarily vlimited to use with a stud of the type shown; but, may be used with other types.

Referring now to the specific embodiment of my invention,- as Shown by the drawings, I have illustrated a stud member having a base plate 1 (Figs'2 and 3) from which is pressed a boss providing the head 2 ofthe stud. This .boss is preferably oval-Shaped in cross-section andxis divided lengthwise by a slot toproyide two contractible yand eX-v pansible por-tions 1,2,and 2b, as hestshown in Figs. 2 land 3. The portion 32a is -`cut by a semi-circnlar .slit 3 leeated .adjacent .t0 :the

base-Plate l of the (Figs. $2 ande) to kproyide a .neck .4 andshoulder I,5 lfor cooperlationwithasoclret, as shownvin Fig. 2. lThe Port-i011 2P is reckless .and shoiillrless for purposes more .fully hereinafter described.

The ends of n the tsletl .6 vterminate in ,the hase plate 1 and .are `enlarged (lclig.V 3) to prov vide openings 7 -7Qbetween Whiehportions V8 ofthe baseplate are located. These por- 2b join thebase plate g1 and aid materially in Permitting freehold-.ieg 0f the has@ Plat@ at the p ortionsS duri-ng contraction and Ve);-

:pansion of `sai-d boss portion. 1, showing one manner .of attaching. the stud The-:Stud may be Seeufredito .a Support in :any suitable finanner, but Lhaye 1show-n it secured to aflexiblefmediurnsuohas a cur- .tain .9, bymeans of an attah'iue plate l0 located at the frontface-ofythe curtain and o .having prongs 11 Passing through@ Vplate 12 and then--throllgh the. Curtain 19 embase ,plate y* 1* 5 The plOngs are then ,clenched Aagainst.tgp .,efbase 1, as shown inFigs.

y g `,3 and y'5. axis of the fastener. l It is also lockedagainst tearing throughfthe cnrtain and covers the holes made in the curtain for thepassage 0f the prongs- The .soekehas showninvFigs, 2,6 and 1S pressed ifram k sheet ,metal to. provide a e casing 1,3 'haying at one end. a stud-receiving aperture ,1,4 Sufroundd by the wall :15- A flange 16 is proyided, adjacent the end presenting the aperture, topreventQthecasing from v'passing ,entirely tlfrongh the laperture 17 inthe socket support 18, as shown in Fig.

2. rlhe casing beyond the flange is formed of several resilientfingers 19-haying inbent Aends 20, which terminate about anaperture 21. Theinbent finger portions pass-through theaperture "17 .inl the support18, and leX- tendbeyond the .inner lface of `the support so thatftheyfrnayrhe bent outwardly andvgrip thewall of .,theaperture 17 .and prevent lthe socket from being pulled loose from its support.

. engage the slot 23 in the head 24 of the screw and turn the screw in a clockwise direction. As the screw turns, the ends of the inbent portions 20 accommodate themselves to the thread of the screw so that, as it feeds forward, the fingers are spread so that the casing is positively secured to the support 18, as best shown in Fig. 2. y

To exclude dust and dirt from the casing, I provide a closure plate 25, which is normally pressed forward by a spring 26 to close the aperture 14, as shown in Fig. 6. When such a plate is used, a tool cannot be engaged directly with the slot 23 and therefore I have provided means for engagement between the closure plateand the screw, in the form of a depressed portion 27, forming a groove at oneside of the closure plate and a boss at the other side, for cooperative engagement in the slot 23 in the head 24 of the screw, as shown in Fig. 6. Thus, a tool may be inserted in the slot in the closure plate, and, when turned, willalso turn the screw for expanding that portion of the casing' which lies beyond the inner wall of the support 18. The screw 22 may be disengaged from the inbent portions of the lingers 19, to permit removal of the socket, by turning the screw and closure plate 25 in a contra-clockwise direction.

The guiding pieces 28 (Figs. 6 and 7) at the sides of the casing and between the lingers 19, are parallel with the axis of the socket and provide means for guiding the closure plate when moved axially. These guiding pieces 28 do not bend outwardly when the lingers 19 are spread to aiiix the casing 13 to the support 18.

Vhen the stud and socket are engaged, the wall 15 of the socket contacts with the neck 4 of the stud and the shoulder 5, formed by the slit 3, contacts with the inner face of the material of the socket which surrounds the stud-receiving aperture 14, as clearly shown by Figs. 2 and 4. In this position of engagement with the socket, the stud is locked against separation therefrom by stresses exerted upon the curtain at those sides of the stud where the shoulder 5 is provided. The

fastener may be separated only by pulling outwardly on the curtain at the lower side of the stud or adjacent to the neckless portion 26 which provides a continuously curved surface. thus permitting` the stud to be tipped so that the shoulder 5 may be tipped out of engagement with the socket.

The upper portion of the stud cannot yield the fulcrum provided between the shoulder 5 and the wall 15 of the socket, when the lower edge of the curtain 9 is pulled outwardly.

Reference is hereby made to applicants co-pending application Serial No. 81,863, filed January 16, 1926, which contains claims generic to the invention illustrated'and described in my present application.

vMy invention is not limited to the illustrative embodiment thereof shown and described.

I claim:

1. A separable fastener comprising, in combination, a socket having a stud-receiving aperture surrounded by a wall, a cooperating stud having a base, a boss portion extending from said base, said boss portion being entirely divided by a slit to provide two contractible and expansible portions, one of said portions being neckless and the other of said portions having a neck for engagement with the wall surrounding the aperture of the socket to secure the stud and socket together.

2. A separable fastener comprising, in combination, a socket presenting astrid-receiving aperture surrounded by a wall, a cooperating stud having an oval shaped boss portion provided with a horizontal slit to divide said boss portion into two contractible and expansible portions and a shoulder formed on one of said contractible and expansible portions for interlocking engagement back of said wall surrounding said aperture when said stud and socket are engaged thereby to prevent separation of the fastener by stresses exerted ad- `acent to said shoulder and the other portion eing shoulderless whereby said fastenermay be separated by a pull adjacent to the shoulderless side of the fastener. l

3. A fastener socket comprising a casing presenting at one end thereof an inwardly extending face surrounding a stud-receiving aperture, and at the other end a plurality of expansible portions, and threaded means assembled as part of the socket prior to attachment to a support and adapted to engage and expand said expansible portions to secure the socket to a suitable support.

4. A fastener socket comprising a casing adapted to be inserted through an aperture in a suitable socket support, said casing presenting at the inner side of the support resilient means adapted to be expanded positively to secure the casing to the support and a screw assembled within the casing prior to attachment to a support for threaded engagement with said resilient means to expand the same.

5. A fastener socket comprising a casing adapted to be inserted through an aperture in a suitable socket support, said casing presenting at the inner side of the support, 1n bent resilient means adapted to be expanded positively to secure the casing to the support and a tapered screw assembled within the casing prior to attachment to a support for threaded engagement with said resilient means to expand the same. c

6. A fastener socket comprising a casing inserted through an aperture in a suitablev support, said casing presenting an aperture at the outer side of the support and presenting inbent expansible portions at the inner side of the support, a screw having its head within said casing, a closure plate for said aperture and means whereby said closure plate may be interlocked with the head of said screw so that rotation of said closure plate will rotate said screw to expand saidinbent portions and positively secure said casing to the support.

7. A fastener socket comprising a casing inserted through an aperture in a suitable support, said casingpresenting an aperture at the outer side of the support and presenting inbent expansible portions at the inner side of the support, a tapered screw having its head within said casing, a closure plate for said aperture and means whereby said closure plate may be interlocked with the head of said screw so that rotation of said closure plate will rotate said screw to expand said inbent portions and positively secure said casing to the support.

8. A flush type fastener socket comprising a casing presenting a stud-receiving aperture at one end thereof, a flange adjacent to the same end, a plurality of inbent portions extending from said flange to form the inner portion of said casing, a screw for expanding said inbent portions to secure the casing to a support and closure means slidable relative to said casing for closing said aperture to prevent entrance of dust and dirt when a stud is not engaged with said socket, means for guiding said closure means, and interengaging means provided between the closure means and screw whereby, when said closure means is turned, said screw may be turned.

9. A socket comprising a casing 13 having a flange 16 at one end thereof and a studreceiving aperture 14 at the same end as' the ange 16, expansible means 20 extending from said flange and threaded expanding means 22 forming part of the fastener socket and adapted to be moved axially relative to the casing to engage and expand the expansible means and secure the socket to a support 18, said threaded expanding means being adapted to be rotated to disengage it from the expansible means.

10. A snap fastener member comprising a casing having means at one end thereof for 

